hi, need some advice,
iv,e got a ford gti and i have had it 4 years now and still love it.
about 4 mounths ago it stuck on 3000k, i had the mass airfolw changed but with no joy. so i disconnected the battery to reset the ecu and it seemed to be fine, when it got hot it started to lose power when the accelorater was about half way down . but when i put the accelorater to the floor it would seem fine and take off. so i took it to westyorkshire motors [ford] its been in 6 times now for the same problem. they said it was the spark plugs and a wire on the coil, then it was the coil, and then the wireing loom. twice they said it was fine but they was running it cold. so i took the head michanice out with me so he could witness the problem, so he changed the wireing loom. iv,e spent near on £500 on this so far. now the cars back in at ford again for the same problem. or ye lifted the bonnet just before i took it back it and found a screw

thanks
Toniboy

 

ok mate the eec iv +eec v ecu runs of few main sensors 1coolant temp sensor found on top of thermostat housing -round plug -take out sensor put it on multi metre on 2 pins / i am not taking the piss put the sensor in the fridge get as close to 0 degrees use thermometor, check these figures with yours

COOLANT TEMP SENSOR

0 = degrees 88000 ohms - 102000 ohms (in fridge)
40= degrees 15000 ohms - 17000 ohms (put under arm pit)
80= degrees 3000 ohms - 4500 ohms (put in glass of hot water)

INLET AIR TEMP SENSOR


10 = degrees 62000 - 70000
40=degrees 15000 - 17000
80=degrees 3000 - 4500


also your oxegen sensor (LAMBDA SENSOR) BUY A NEW 1 NOT FROM FORD

THROTTLE POSITION SENSOR

ON FACE OF INLET MANIFOLD L/H SIDE USUALY

take plug of you should see 3 pins running vertical
messure between top and bottom pin
about 400 - 6000 ohms aprox

next have some1 in the car and check no throttle between pins mid and bottom are about 0.5 - 1volt
keep on the same pins and open throttle you should see the figures move up between 4.3v-4.8volts is good>


this will save you some money

OR IF YOUR LOADED GO OUT AND BUY ALL NEW SENSORS

OH AND GO TO LOCAL GARAGE ASK TO PUT CAR ON RAMP AND CHECK CAT JUST HIT IT WITH YOUR HAND ,IF THERES NOISE INSIDE REPLACE IT.
HOPE THIS HELPS TOMMY

WE COULD DO WITH SOME MORE INFO ASWELL MATE LIKE DOSE CAR BACK FIRE SPLUTTER ETC

ALL THE BEST TOMMY

 

CHEERS TOMMY
The cars still at ford at the mo, but i'll let you know the out come, as for the feed back on the backfire, that no. but it dose splutter when it loses power. and i do have a rattle under the car.

Thanks
Toniboy

 

rattle under car sounds like cat when it brakes up inside it can block the exhaust causing too much back pressure causing loss in power,
dose it sound funny hissy when u rev it???

 

spot on mate thats what it dose. so it could be that whats caused the problem. THANKS FOR YA HELP. waiting for FORD to ring now. soon as i get it back i'll post ya ok,

THANK AGAIN
Toniboy